Excessive sun can have a detrimental issue on the leave of shade - loving plants like the PJM rhododendron . This can happen when there is a sudden removal of a nearby tree or bush that was allow shade to the rhododendron . Without the nuance , the rhododendron is reveal to more sun than it can handle , leading to a phenomenon acknowledge as sunscald .

Sunscald happens when the chlorophyl production in the leaves is overwhelm by the excessive sunlight . Chlorophyll is creditworthy for the greenish color in plants and is crucial for photosynthesis , the summons by which plant convert sun into Department of Energy . When there is an imbalance between the amount of sun received and the chlorophyl yield , the leafage can seem red or even purple .

In the case of your PJM rhododendron , the remotion of the chokecherry tree may have expose it to more sunlight than it can brook . The leaves , unable to cope with the excess visible light , may have begin bring forth less chlorophyl , go to the red colour . This can be peculiarly noticeable in the summertime when the sun is at its height intensity .

Another cistron that can put up to the carmine colouration of the leaves is the fluctuation in temperatures during the summertime . in high spirits heat followed by cooler temperature can interrupt the nutrient uptake and usage in industrial plant . This can guide to alimental imbalances , further bear on the health and color of the leaf .

To direct the issue of red folio on your PJM rhododendron , there are a few steps you’re able to take :

1 . Provide shadowiness : Since the rhododendron is a wraith - loving plant , it is important to ensure that it receives adequate shade throughout the day . turn over planting another tree diagram or shrub nearby to provide the necessary shade . This will help protect the leave from overweening sunshine and boil down the chance of sunscald .

2 . Watering and mulching : Proper watering is all important for the wellness of the rhododendron . check that to irrigate it on a regular basis , especially during dry periods , to preclude drought stress . Additionally , applying a layer of organic mulch around the stand of the plant can help keep on wet and regularize soil temperature , creating a more worthy environment for the rhododendron .

3 . Nutrient management : To address nutrient imbalances , it is of import to allow for the rhododendron with a balanced fertilizer . wait for a fertilizer specifically formulated for acid - loving flora like rhododendrons and follow the instruction manual for program program . Regularly monitor the nutrient grade in the soil can also help identify any deficiencies or excesses that need to be come up to .

4 . Pruning and maintenance : veritable pruning can facilitate advance healthy growing and prevent overcrowding , allowing for better air circulation and idle incursion . However , be conservative not to prune too heavily , especially during the summer , as this can further accentuate the industrial plant . It is best to consult a gardening expert or refer to specific pruning guideline for rhododendron .

The reddened coloration of leave on your PJM rhododendron can be assign to excessive sun triggered by the remotion of the chokecherry tree , top to sunscald and a reduction in chlorophyll product . Fluctuations in temperatures during the summer can also put up to alimental asymmetry , further affecting leaf color . By providing tad , right watering and mulching , nutrient management , and regular maintenance , you may facilitate doctor the wellness and vibrancy of your rhododendron ’s leaves .

Caroline Bates